Disk-sharpener



C. B. HUTCHINS.

DISK SHARPENEH. APPLICATION FILED MAR. 21. I9I9.

1,333, 1 1 2. Patented Mar. 9, 1920.

.l Vw I f UNITED OFFICE. f

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VBe lit'knownl that I, CABLE; Hu'roHiNs, :.1

citizen of the United.` States, residing at Algona, inthe. county of KossuthiandzState of Iowa, have invented certain -new and useful Improvements in Disk-Sharpeners; yand I do declare the following to be a full,1clear, and exactdescription ofthe invention, such as will enable others skilled in the art tol which it appertains to make'and use the same.

This invention relates to improvements in disk Sharpeners and has for its primary obbly mounted in bearings Y'C formed on the ject the provision of a device for sharpening the disks of plows without removing them .from the scraper brackets or the gangs from supporting and rotating plow disks while thev are being sharpened.

With these and numerous other objects ini' view, the invention resides in certain novel features of construction and in unique combinations of parts Vto be hereinafter fully de'- scribed and claimed, the descriptive matter being supplemented by the accompanying drawing wherein:

Figure 1 is a perspective' view of the invention applied to use, and

l Fig. 2 is a transverse sectional view illustrating the method of clamping the sharp?` ening device to the lever.

In these drawings which constitute a part of the application,A and in which similar reference characters designate corresponding parts throughout the severalviews, the letter LA indicates the cultivating disks mountedon a shaft B whose ends are rotataparallel arms extending from theV scraper bracket D, all of well known construction.

For the purpose of supporting the disks in rotatable position, a pair of jacks or sup-v ports l are positioned beneath the bearings on *theV arms ofthey bracket D, said jacks each comprising an elongated rectangular base block 2 adapted to support a vertically disposed block 3, said vblocks .being secured` together by means of a pair of parallel spaced bolts 4, whose threaded ends extend a considerable distance above the upper face emery stone.

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Y Specification vof Letterslatent. f-

Patelllted lwafl?, 9,1920.. ApplicationzledMarch 27, 1.9191 SeraI'No. 2.85,551". Y 'y vof thek last" namedfblock 3'. The'. vertical blocksff are' disposed at the .farthermost' end of the baseb'lockfrom. he source' of power for rotatingithe disks, so as to form' a bracel to prevent tipping over the ventireV devicel when motion is given the disks. Towfurther assistin retaining the: jacks lin proper position stakes daredriven inthe-'ground at the inner ends of the base blocks 2 as illustrated.` The bearings C are adapted to be disposed betweenthe extensions on the bolts to prevent relative movement of the jacks and bearings. Y

Although the disks may be rotated by other practical means, I have provided ya pulley 5 formed in two sections and preferablv, though not necessarily made of wood.

The two sections are secured together. Y

around'the shaft by means of bolts as clearly illustrated in Fig. l of the drawings. A belt lof any suitable construction may be 'eX- tended around said pulleyV and over the pulley of a motor, 'gas engine or the like so as to rotate the disks. Y Y

The' sharpening `device is mounted on a stake or lever S of 'a suitable length, said lever being provided on its lower end .with a substantially triangular metal prong adapted to project into the ground to support the lever. v The upper end of the lever is shaped to form an operating handle. The

sharpening device 7 is preferably rectangu-` lar in shape and formed of carborundum or The means for holding the sharpening device ony the lever includes elongated Vmetal plates or arms 10 disposed pair on each edge, said plates beingpro` vided with substantially centrally disposed apertures which receive the -bolts 9. bolts. are adapted to be disposed between the that the plates 10 will ybe clamped tightly against the lever and Sharpener. Although I have described the clamping means as 1 on the edges of the lever and Sharpener, one

The

sharpening device and the lever` and upon threading` the nuty on the bolt it is obvious comprising two pairs vof plates, it is obvious f Y that two single yplates of greater dimensions could well be used in place ofthe pairs of plates.` With the herein described clamps, the sharpening device may be adjusted vertically as required b disks from the groun j In operation the disks beingl rotated and the. Sharpener properlyV adjusted the stone isbrought into and out of contact with the y the distance of thel disks by lateral pressure on the operating lever 8. It is readily seen that the rapid rotation of the disks in contact with-the sharpening device will quickly sharpen them, and

in view of the fact that it is unnecessary to remove the disks from the shaft'a minimum length oftime is used for the operation.

In the drawings, certainv specific details of construction have been shown Jfor acconr plishing probably the best results, and in the preceding, such details have been described, but it is obvious that I need vnot be restricted thereto otherwise than claimed.

I claim-- l A sharpening device of the class described comprising a lever substantially rectangular in cross-section, a flat substantially tri Aangular metal prong secured to one fiat side tending through saidbolt holes whereby the clamping plates may be tightened againstthe block and lever to securey the block yin its adjusted positions.

In testimony whereof I have hereunto set my hand.

, CARL HUTCHINS. 

